题目内容

AIDS is said ________ the number-one killer of both men and women over the past few years in that poverty-stricken region where no medical services are available.


  1. A.
    being
  2. B.
    to be
  3. C.
    to have been
  4. D.
    having been
C
解析:

试题分析:本题考查对非谓语动词的掌握。详细
解答:由句中的时间状语“over the past few years”可知动作发生在谓语动作之前,故应用不定式的完成式作宾语。
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